Born ‎20-2-1887 Groningen-Groningen, Netherland, died ‎12-10-1942 Auschwitz, Katowice, Poland‎, 54 or 55 years. Son of Jacob Bollegraaf/ Vellema and Klaartje Simons/ Meijer‏

Born ‎28-1-1874 Middelstum, Netherland, died ‎12-10-1942 Auschwitz, Katowice, Poland‎, 67 or 68 years, ‎1st marriage to: Levie de Vries - Muller, ‎2nd marriage to: Ruben Bollegraaf/ Simon. Daughter of Salomon van Zanten - Salomons and Rebekka van Dam - van Geuns‏